Microplastic pollution: An emerging contaminant in aquaculture

Iheanacho, Stanley; Ogbu, Miracle; Bhuyan, Md. Simul; Ogunji, Johnny O.

doi:10.1016/j.aaf.2023.01.007

Cited by 30 publications

(4 citation statements)

References 169 publications

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“…Microplastics (MPs, plastics less than 5 mm in size) are produced from the degradation of larger plastics [116]. When ingested, MPs can block digestive tracts and prevent proper digestive function [117,118]. For example, MPs reduce digestive enzymes and cause hepatic dysfunction in Nothobranchius guentheri [ 119] , and induce tissue damage in the intestine of Girella laevifrons [120] and in liver and intestine of European sea bass [121] and goldfish larvae [122], thus impairing digestive performance.…”

Section: Effects Of Environmental Factors On Feedingmentioning

confidence: 99%

The effects of environmental changes on the endocrine regulation of feeding in fishes

Volkoff

2024

Phil. Trans. R. Soc. B

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Fishes are exposed to natural and anthropogenic changes in their environment, which can have major effects on their behaviour and their physiology, including feeding behaviour, food intake and digestive processes. These alterations are owing to the direct action of environmental physico-chemical parameters (i.e. temperature, pH, turbidity) on feeding physiology but can also be a consequence of variations in food availability. Food intake is ultimately regulated by feeding centres of the brain, which receive and process information from endocrine signals from both brain and peripheral tissues such as the gastrointestinal tract. These endocrine signals stimulate or inhibit food intake, and interact with each other to maintain energy homeostasis. Changes in environmental conditions might change feeding habits and rates, thus affecting levels of energy stores, and the expression of endocrine appetite regulators. This review provides an overview of how environmental changes and food availability could affect feeding and these endocrine networks in fishes. This article is part of the theme issue ‘Endocrine responses to environmental variation: conceptual approaches and recent developments’.

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Section: Effects Of Environmental Factors On Feedingmentioning

confidence: 99%

The effects of environmental changes on the endocrine regulation of feeding in fishes

Volkoff

2024

Phil. Trans. R. Soc. B

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“…Sustainability in aquaculture production is the safeguard of future food demand and security (FAO, 2022). But one of the emerging challenges to accomplishing sustainability in aquaculture that has recently been reported is MPs pollution (Iheanacho et al, 2023). PE, PP, and PS are the most common types of MPs found in aquaculture environments (Wu et al, 2023) and also in freshwater and marine water environments in the world Ocean Wise, 2023).…”

Section: Introductionmentioning

confidence: 99%

Biodegradation of polyethylene (PE), polypropylene (PP), and polystyrene (PS) microplastics by floc-forming bacteria, Bacillus cereus strain SHBF2, isolated from a commercial aquafarm

Hossain,

Shukri,

Waiho

et al. 2024

Environ Sci Pollut Res

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The ubiquitous proximity of the commonly used microplastic (MP) particles particularly polyethylene (PE), polypropylene (PP), and polystyrene (PS) poses a serious threat to the environment, and human health globally.Biological treatment as an environment-friendly approach to counter MPs pollution has recent interest when the bioagent has beneficial functions in their ecosystem. This study aimed to utilize beneficial floc-forming bacteria B. cereus SHBF2 isolated from an aquaculture farm in reducing the MPs particles (PE, PP, and PS) from their environment. The bacteria were inoculated for 60 days in a media containing MPs particles as a sole carbon source. On different days of incubation (DOI), the bacterial growth analysis was monitored and the MPs particles were harvested to examine their weight loss, surface changes, and alterations in chemical properties. After 60 DOI, the highest weight loss was recorded for PE, 6.87 ± 0.92%, which was further evaluated to daily reduction rate (k), 0.00118 gday -1 , and half-life (t 1/2 ), 605.08 ± 138.52 days. The OD value (1.74 ± 0.008 Abs.) indicated the higher efficiency of bacteria for PP utilization, and so for the colony formation per define volume (1.04 × 10 11 CFU/mL). Biofilm formation, erosions, cracks, and fragments were evident during the observation of the tested MPs using the scanning electron microscope (SEM). The formation of carbonyl and alcohol group due to the oxidation and hydrolysis by SHBF2 strain were confirmed using the Fourier transform infrared spectroscopic (FTIR) analysis. Additionally, the alterations of pH and CO 2 evolution from each of the MPs type ensures the bacterial activity and mineralization of the MPs particles. The findings of this study have confirmed and indicated a higher degree of biodegradation for all of the selected MPs particles. B. cereus SHBF2, the floc-forming bacteria used in aquaculture, has demonstrated a great potential for use as an efficient MPs degrading bacterium in the biofloc farming system in the near future to guarantee a sustainable green aquaculture production.

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“…In Europe, for instance, approximately 25.8 million tons of post-consumer plastic waste are generated annually, with 30% being recycled and 40% destined for incineration [18]. Plastic products can contribute to litter, leading to the release of micro-and nanoplastics (MNPs) [19][20][21] into the oceans and aquaculture [22], then posing potential risks to human health when they enter the lungs [23] or bloodstream [24]. Additionally, plastics contribute to climate change by emitting greenhouse gases (GHGs) during the extraction and processing of fossil resources.…”

Section: Introductionmentioning

confidence: 99%

“…So far, more than 20,000 fibers per day were carried downstream by the river, while up to 213,200 fibers per square kilometer were detected drifting on the ocean's surface [41]. These microfibers contribute to marine contamination, often referred to as "plastic soup" with press releases highlighting their contribution of about 35% reported by Statista [42], Reuters [43], The Guardian [44], the European Environment Agency [45,46], and elsewhere [22,[47][48][49]. Meanwhile, shedding from face masks has become a big source of microfibers, particularly during the COVID-19 period [50].…”

Section: Introductionmentioning

confidence: 99%

A Review on Melt-Spun Biodegradable Fibers

Naeimirad,

Krins,

Gruter

2023

Sustainability

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The growing awareness of environmental issues and the pursuit of sustainable materials have sparked a substantial surge in research focused on biodegradable materials, including fibers. Within a spectrum of fabrication techniques, melt-spinning has emerged as an eco-friendly and scalable method for making fibers from biodegradable plastics (preferably bio-based), intended for various applications. This paper provides a comprehensive overview of the advancements in the realm of melt-spun biodegradable fibers. It delves into global concerns related to micro- and nanoplastics (MNPs) and introduces the concept of biodegradable fibers. The literature review on melt-spun biodegradable monofilaments and multifilaments unveils a diverse range of polymers and copolymers that have been subjected to testing and characterization for their processing capabilities and the performance of the resultant fibers, particularly from mechanical, thermal, and biodegradation perspectives. The paper discusses the impact of different factors such as polymer structure, processing parameters, and environmental conditions on the ultimate properties, encompassing spinnability, mechanical and thermal performance, and biodegradation, with schematic correlations provided. Additionally, the manuscript touches upon applications in sectors such as clothing, technical textiles, agriculture, biomedical applications, and environmental remediation. It also spotlights the challenges encountered in the commercialization of these fibers, addresses potential solutions, and outlines future prospects. Finally, by shedding light on the latest developments, challenges, and opportunities in the field, this review endeavors to stimulate further innovation and adoption of biodegradable fibers. It seeks to unlock their potential and contribute to the realization of a more environmentally conscious society.

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Microplastic pollution: An emerging contaminant in aquaculture

Cited by 30 publications

References 169 publications

The effects of environmental changes on the endocrine regulation of feeding in fishes

The effects of environmental changes on the endocrine regulation of feeding in fishes

Biodegradation of polyethylene (PE), polypropylene (PP), and polystyrene (PS) microplastics by floc-forming bacteria, Bacillus cereus strain SHBF2, isolated from a commercial aquafarm

A Review on Melt-Spun Biodegradable Fibers

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